Effect of sowing time and nutrient management on physiological parameters of wheat

An experiment was conducted during the Rabi seasons of 2020−21 and 2021−22 at Livestock farm, Department of Agronomy, College of Agriculture, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur (M.P.) to study the physiological parameters of wheat under different sowing dates and nutrient management. Twelve treatments comprised of four dates of sowing viz., 25^th October, 5^th November, 15^th November and 25^th November were assigned in main plots and these were superimposed with three nutrient management viz., Recommended dose of fertilizer, 150% RDF+FYM 15 t ha⁻¹ and 150 % RDF+FYM 15 t ha⁻¹+Growth Regulators (Two spray as tank mix- Chlormequat chloride (Lihocin @ 0.2%) +Tebuconazole (Folicur @ 0.1%) as sub plots and carried out in split plot design with three replications. The results revealed that physiological parameters namely Crop growth rate, Relative growth rate, Leaf area index and Leaf area duration of wheat were significantly affected by sowing time being the maximum when wheat was sown on 5^th November and proved significantly superior over delayed sowing (15^th November and 25^th November). The CGR, RGR, LAI and LAD were also affected by nutrient management. The values of these parameters attained maximum values when 150% RDF+FYM 15 t ha⁻¹+Growth Regulators was applied to wheat and found significantly superior over other nutrient management.